WO2000060016A1 - Composition primaire pour composition de caoutchouc fluore et article enduit d'une couche primaire - Google Patents

Composition primaire pour composition de caoutchouc fluore et article enduit d'une couche primaire Download PDF

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Publication number
WO2000060016A1
WO2000060016A1 PCT/JP2000/001992 JP0001992W WO0060016A1 WO 2000060016 A1 WO2000060016 A1 WO 2000060016A1 JP 0001992 W JP0001992 W JP 0001992W WO 0060016 A1 WO0060016 A1 WO 0060016A1
Authority
WO
WIPO (PCT)
Prior art keywords
composition
fluororubber
weight
undercoat
undercoat paint
Prior art date
Application number
PCT/JP2000/001992
Other languages
English (en)
Japanese (ja)
Inventor
Nobuyuki Tomihashi
Koichiro Ogita
Kiyotaro Terasaka
Toshiyuki Kinoshita
Original Assignee
Daikin Industries, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Publication of WO2000060016A1 publication Critical patent/WO2000060016A1/fr

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2053—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
    • G03G15/2057—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating relating to the chemical composition of the heat element and layers thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers

Definitions

  • the present invention relates to an undercoat paint composition for a fluororubber composition and an undercoat paint-coated article.
  • the present invention relates to an undercoat paint composition for a fluororubber composition and an undercoat paint-coated article, and more particularly, to an alkoxysilane-containing organo used for improving the adhesion between a fluororubber layer and a silicone rubber surface of a substrate.
  • the present invention relates to an undercoat composition containing a silane-based polymer.
  • fluoro rubber Due to its excellent heat resistance, weather resistance, oil resistance, solvent resistance, and chemical resistance, fluoro rubber is applied or impregnated to, for example, textiles, fibers, metals, plastics, rubber, and various other substrates, and is used for industrial purposes. Widely used as a material.
  • fluororubber compositions containing release components such as fluororesins are used in fixing rolls of office automation equipment (hereinafter referred to as OA equipment).
  • OA equipment office automation equipment
  • an elastic layer is formed on the outer periphery of a cored bar, and a release layer formed of such a fluororubber composition is provided on the outer periphery of the elastic layer.
  • Silicone rubber is often used for the elastic layer because heat resistance is required. Since silicone rubber is generally non-adhesive (adhesive), it is necessary to improve the adhesion of the silicone rubber layer to the fluororubber composition forming the release layer.
  • An object of the present invention is to improve the adhesive performance of a primer coating composition for a fluororubber composition used when a vulcanized fluororubber layer is coated on a non-tacky substrate, particularly a silicone rubber, and particularly to improve the adhesive performance when hot. That is.
  • Another object of the present invention is to provide an article having a non-adhesive substrate, particularly a silicone rubber, and a vulcanized fluororubber layer, such as a substrate for a roll for OA equipment and the like. And to improve the adhesiveness with the adhesive.
  • a non-adhesive substrate particularly a silicone rubber
  • a vulcanized fluororubber layer such as a substrate for a roll for OA equipment and the like.
  • the object is to provide an organosilane-based polymer having a repeating unit derived from an alkoxysilane monomer in a molecular chain, and an amount of 0.1% by weight per 100 parts by weight of a solid content of the organosilane-based polymer.
  • an article for an OA device comprising a rubber, wherein an undercoat layer formed from the above-described undercoat coating composition for a fluororubber composition is formed on the surface thereof.
  • the alkoxysilane monomer generally has the formula:
  • R is an alkyl group having 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms;
  • the organosilane polymer used in the present invention means a polymer containing a repeating unit derived from the alkoxysilane monomer in the main chain.
  • the repeating unit derived from the alkoxysilane monomer usually comprises 1 to 50% by weight in the main chain.
  • the organosilane polymer may be composed of the following monomers in addition to the alkoxysilane monomer.
  • R 2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an alkyl group having 1 to 12 carbon atoms, preferably an alkyl group having 1 to 6 carbon atoms, and a carbon atom having 2 to: I 2, preferably Represents an alkenyl group having 26 carbon atoms or an aryl group having 62 carbon atoms.
  • R 3 represents an alkyl group having 12 carbon atoms, preferably an alkyl group having 16 carbon atoms, an alkyl group having 2 12 carbon atoms, preferably an aryl group having 6 carbon atoms, or an aryl group having 6 12 carbon atoms. ];
  • An organic titanate compound is a compound in which four or six organic ligands are bonded to a titanium atom, and usually has at least one alkoxy group. In addition, those containing a plurality of titanium atoms via an oxygen atom are also included.
  • organic titanate compound examples include the following compounds. Tetrapropyl titanate, tetra-n-butyl titanate, tetrakis (2-ethylhexyl) titanate, tetrastearoyl titanate, tetrakis
  • a preferred organic titanate compound is a titanate compound having a functional group having an element such as N, S, or P.
  • the amount of the organic titanate compound is 0.001 to 15 parts by weight, preferably 0.01 to 12 parts by weight, based on 100 parts by weight of the solid content of the organosilane polymer. If the amount of the organic titanate compound is less than 0.01 part by weight, the effect of addition will not be exhibited, and if it exceeds 15 parts by weight, the composition will gel immediately after mixing and cannot be applied.
  • the acrylic resin optionally added to the composition of the present invention is a polymer or copolymer of acrylic acid or methacrylic acid or their esters.
  • Estenoles include methyl, ethyl, propyl, butynole, 2-ethylhexyl, glycidyl esters, esters with polyhydric alcohols, and the like.
  • Examples of the comonomers include butyl acetate, butyl chloride, styrene and derivatives thereof.
  • the acrylic resin may be present as a copolymer (a random copolymer, a block copolymer, a graft copolymer, or the like) of a constituent monomer of an acrylic resin and a constituent monomer of an organosilane-based polymer.
  • the concentration of the acryloline resin is usually 1 to 90% by weight, preferably 5 to 50% by weight, based on the solid content of the organosilane polymer. / 0 .
  • the liquid carrier usually used for preparing the composition of the present invention may be a liquid carrier used for a conventional liquid composition of an organosilane polymer.
  • liquid carriers include hydrocarbon solvents such as toluene and xylene, methanol, ethanol Isopropyl alcohol, lower alcohols such as n-butanol, ketone solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone, etc.Solob solvents such as methyl sorb, butyl sorb, methyl carbitol And carbitol solvents such as ethyl carbitol and butyl carbitol; ether solvents such as acetyl ether, dibutyl ether, dibutyl ether and diethylene glycol dimethyl ether; and water.
  • the liquid carrier is used in an amount of 100 to 100 parts by weight based on a total of 100 parts by weight of the organosilane polymer and the desired acryl resin.
  • the undercoat coating composition of the present invention can be prepared by dissolving or dispersing an organosilane polymer and desired acrylic resin, organic titanate compound, and other additives in a liquid carrier.
  • the organic titanate compound can be mixed with the organosilane-based polymer solution immediately before use, either as it is or after being dissolved or dispersed in a liquid carrier.
  • the undercoat composition of the present invention is applied to a substrate by a conventional coating method such as brush coating, spray coating, dip coating, flow coating and the like, and is sufficiently dried at 80 to 120 ° C. to form an undercoat layer.
  • a conventional coating method such as brush coating, spray coating, dip coating, flow coating and the like
  • the fluororubber vulcanizing composition is applied on the undercoat layer and then dried. Then, the undercoat layer and the vulcanized fluoro rubber layer are adhered.
  • the surface of the object to be coated is preferably sufficiently degreased and washed before applying the undercoat composition of the present invention.
  • the undercoat layer formed from the undercoat paint composition for a fluororubber composition of the present invention has improved adhesive strength and heat resistance as compared with conventional adhesives, and has a surface layer coated with fluorine rubber or the like. Good durable goods can be obtained regardless of severe use conditions.
  • silicone rubber is the most common, but metals such as iron, stainless steel, copper, aluminum and brass; glass plates, glass woven fabrics and the like. Glass products such as non-woven fabrics; polypropylene, polyoxymethylene, polyimide, polyamide imide, polysulfone, polyether Molded products and coatings of general-purpose and heat-resistant resins such as tersulfone and polyetheretherketone; general-purpose rubbers such as SBR, butyl rubber, NBR, and EPDM may be used.
  • the film formed by the undercoat paint composition of the present invention adheres strongly to fluororubber, and can be used in fields requiring durability such as heat resistance, solvent resistance, lubricity, and non-adhesion.
  • Specific applications include rolls for OA equipment such as copiers, printers and facsimiles (eg, fixing rolls, pressure rolls) and conveyor belts; sheets and belts; O-rings, diaphragms, chemical resistant tubes, fuel hoses , Gas seals for chemical plants, engine gaskets, etc.
  • Primer D as an alkoxysilane-based polymer solution (containing 15% by weight of a copolymer of polyacrylate and butyltrimethoxysilane; manufactured by Shin-Etsu Chemical Co., Ltd.) was added to an organic titanate compound tri (y_ (2-aminoethynole)). 1 part by weight of aminoethoxyisopropoxytitanium ("Planact KR44" manufactured by Ajinomoto Co., Inc.) (per 100 parts by weight of alkoxysilane-based polymer) was mixed to prepare an undercoat paint.
  • Plant KR44 aminoethoxyisopropoxytitanium
  • the silicone rubber vulcanized sheet was spray-coated on one half of the undercoating material prepared above and dried sufficiently at 80 to 100 ° C. Thereafter, an undercoat layer was formed with a fluororubber coating material “GL-252” (vinylidenefluoride Z hexafluoropropylennotetrafluoroethylene copolymer 50% by weight / dispersion). The entire one side (undercoat and unpainted) was spray-painted. After sufficiently drying at 80 to 100 ° C., it was baked at 200 ° C. for 30 minutes.
  • GL-252 vinylenefluoride Z hexafluoropropylennotetrafluoroethylene copolymer 50% by weight / dispersion
  • the adhesion of the coating film was evaluated at normal temperature and high temperature as follows.
  • the measurement conditions were as follows.
  • a coating film was prepared in the same procedure as in Example 1 except that the amount of the organic titanate (Plainact KR44) was changed to 2 parts by weight, and the adhesion was evaluated.
  • a coating film was prepared in the same procedure as in Example 1 except that the amount of the organic titanate (Plainact KR44) was changed to 5 parts by weight, and the adhesion was evaluated.
  • Example 2 Except for using 10 parts by weight, a coating film was prepared in the same manner as in Example 1, and the adhesion was evaluated.
  • Example 2 The same procedure as in Example 1 was carried out except that 1 part by weight of tetra-n-butyl titanate (TBT B-1. Manufactured by Nissan Soda Co., Ltd.) was used in place of the organic titanate (Plainact KR44) in the preparation of the undercoat paint. A coating film was prepared using the method described above, and the adhesion was evaluated.
  • TBT B-1 tetra-n-butyl titanate
  • Align KR44 organic titanate
  • a coating film was prepared in the same procedure as in Example 1 except that the amount of the organic titanate (Plainact KR44) was changed to 20 parts by weight, and the adhesion was evaluated.
  • Example 2 In the preparation of the undercoat paint, the same as Example 1 except that 5 parts by weight of ⁇ -aminopropyltriethoxysilane ( ⁇ _1100; manufactured by Nippon Tunica Co., Ltd.) was used instead of the organic titanate (Plainact KR44). A coating film was prepared according to the following procedure, and the adhesion was evaluated.
  • ⁇ _1100 ⁇ -aminopropyltriethoxysilane
  • Plainact KR44 organic titanate

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

Cette invention concerne un composition primaire renfermant en poids 100 parties, sous forme solide, d'un polymère d'organosilane comportant des unités répétées tirées d'un monomère d'alkoxysilane dans la chaîne moléculaire, et de 0,001 à 15 parties en poids d'un composé titanate organique. Utilisée pour enduire une base non collante, en particulier un caoutchouc aux silicones, avec une couche de caoutchouc fluoré vulcanisé, la composition primaire peut permettre d'améliorer l'accrochage entre la couche de caoutchouc fluoré et la surface en caoutchouc aux silicones, en particulier à des températures élevées.
PCT/JP2000/001992 1999-04-01 2000-03-30 Composition primaire pour composition de caoutchouc fluore et article enduit d'une couche primaire WO2000060016A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11/94945 1999-04-01
JP9494599 1999-04-01

Publications (1)

Publication Number Publication Date
WO2000060016A1 true WO2000060016A1 (fr) 2000-10-12

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Application Number Title Priority Date Filing Date
PCT/JP2000/001992 WO2000060016A1 (fr) 1999-04-01 2000-03-30 Composition primaire pour composition de caoutchouc fluore et article enduit d'une couche primaire

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WO (1) WO2000060016A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002365950A (ja) * 2001-06-12 2002-12-20 Kinyosha Co Ltd 定着部材及びその製造方法
JP2004086163A (ja) * 2002-06-26 2004-03-18 Hokushin Ind Inc 定着・加圧ロール
WO2005033229A1 (fr) * 2003-10-07 2005-04-14 Wrp Asia Pacific Sdn. Bhd. Couche d'impression intermediaire
JP2010116490A (ja) * 2008-11-13 2010-05-27 Toppan Printing Co Ltd 塗布用アンカーコート剤
US10795298B2 (en) 2018-03-28 2020-10-06 Fuji Xerox Co., Ltd. Fixing member, fixing device, process cartridge, and image forming apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6067541A (ja) * 1983-09-24 1985-04-17 Daikin Ind Ltd フッ素ゴム塗料用下塗り組成物
JPH0691783A (ja) * 1992-05-12 1994-04-05 Toshiba Silicone Co Ltd プライマー組成物および熱定着用シリコーンゴムローラ
JPH07292320A (ja) * 1994-04-22 1995-11-07 Shin Etsu Chem Co Ltd プライマー組成物及びシリコーン積層体

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6067541A (ja) * 1983-09-24 1985-04-17 Daikin Ind Ltd フッ素ゴム塗料用下塗り組成物
JPH0691783A (ja) * 1992-05-12 1994-04-05 Toshiba Silicone Co Ltd プライマー組成物および熱定着用シリコーンゴムローラ
JPH07292320A (ja) * 1994-04-22 1995-11-07 Shin Etsu Chem Co Ltd プライマー組成物及びシリコーン積層体

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002365950A (ja) * 2001-06-12 2002-12-20 Kinyosha Co Ltd 定着部材及びその製造方法
JP2004086163A (ja) * 2002-06-26 2004-03-18 Hokushin Ind Inc 定着・加圧ロール
WO2005033229A1 (fr) * 2003-10-07 2005-04-14 Wrp Asia Pacific Sdn. Bhd. Couche d'impression intermediaire
JP2010116490A (ja) * 2008-11-13 2010-05-27 Toppan Printing Co Ltd 塗布用アンカーコート剤
US10795298B2 (en) 2018-03-28 2020-10-06 Fuji Xerox Co., Ltd. Fixing member, fixing device, process cartridge, and image forming apparatus

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